The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2007
Filed:
May. 04, 2005
Elisa Garavini, Munich, DE;
Josef Osterried, Ottobrunn, DE;
Elisa Garavini, Munich, DE;
Josef Osterried, Ottobrunn, DE;
Abstract
An electronic ballast for a lamp () having an input circuit () having a connection to a voltage supply, an output circuit () having a connection for the lamp (), and a voltage converter apparatus (), which is arranged between the input and the output circuit (), the voltage converter apparatus including an input capacitor (C) and an output capacitor (C), between which a switching apparatus (T) and a freewheeling diode (D) as well as at least one damping element (L), at least one trapezoidal capacitor (C) and an inductance (L) are arranged, the voltage converter apparatus () being designed to carry out commutation, in each case a main circuit being defined by the current flow prior to and following commutation, at least one damping element (L) and at least one trapezoidal capacitor (L) being connected in series, and such a series circuit being arranged in a secondary circuit.